Time cut-out for electric lamps



No. 624,6l5. Patented may 9, |899. J. H. DMAN.

TIME CUT-OUT LECTRIC LAMPS.

(Application led July 14, 1898.)

Q OQ n@ N UNITED STATES PATENT OFFICE.

JAMES H. BOARDMAN, OF PORT IIURON, MICHIGAN.

TIME CUT-OUT FOR ELECTRIC LAMPS.

SPECIFICATION forming part of Letters vPatent No. 624,615, dated May 9, 1899.

Application filed July 14,1898.

To a/Z'Z whom, it may concern:

Be it known that I, JAMES H. BOARDMAN, a citizen of the United States, residing at Port Huron, in the county of St. Clair and State of' Michigan, have invented certain new and useful Improvements in Automatic Time Cut- Outs for Incandescent Electric Lights; and I do declare the following to be a full, clear, and-exact description of the invention, such as will enable others skilled in the art to Which it appertains to make and use the same.

My invention relates to cnt-outswitches for incandescent-electric-light service circuits, and more particularly to that class of springactuated switches which are automatically operated at a certain predetermined time by a suitable clock-movement; and the object is to provide a simple, reliable, and effective device for this purpose.

The accompanying drawings show my invention in the best form now known to me; but many changes in the details might be made within the skill of a good mechanic without departing from the spirit of my invention as set forth in the claims at the end of this specication.

The same reference characters indicate the same parts of the device.

Figure 1 is a front elevation of my improved automatic time cut-out. lFig. 2 is a vertical section with the spring-actuated switch closed. Fig. 3 is an enlarged view with the switch open.

A denotes the non-conducting base, which may be of marble, porcelain, slate, hard rubber, vulcanized ber, or the like, and it is securely fixed at a convenient point to the wall of the room or premises where the lights are used. 1

1 and 2 denote the lamp-circuit, the conductor 1 being electrically connected to the switch-post 3, and it terminates at the switchpost 4, while the conductor 2 is similarly connected to the switch-post 5 and terminates at the corresponding switch-post G.

7 and S represent the main-line switch-posts, and 9 9 the main-line conductors.

1() and 12 denote theknife-blade switches, fulcrumed at their lower ends to 'the posts 7 and S and having their upper 0r free ends connected bythe non-conducting bar 11, the switches when closed being seated in the slots Serial No. 685,914. (No model.)

in the lamp-circuit terminal-posts 4 and 6, so that the lamp-circuit conductors 1 and 2 form a loop with the main-line conductors 9 and 9'.

13 14 denote conductor-plates fixed to the vbase A, and 15 and 16 represent the clockcircuit switch-posts, fixed on the plates 13 and 14, and 17 and 1S the knife-blade switch-levers, fulcrumed at their lower ends in said posts 15 and 16, respectively, and having their free ends connected by the non-conducting handle 19, the switch-levers when closed being seated in the slots in the lamp-circuit posts 3 and 5f A y 32 and 33 denote leaf-springs having their lower ends fixed to the posts 7 and S and their free ends resting under the switch-blades 10 and 12, respectively.

20 denotes a conductor ext-ending from the plate 13 t0 the binding-post 21, and 22 a conductor extending from said post 2l to the post 22, whence the current enters the magnet 23 and leaves it at the post 24, thence travels through the leg 25 of the clock to the break- Wheel 26, carried by the hour-hand shaft. 27 denotes a contact-spring resting on said breakwheel, and 23 a conductor extending from said contact-spring to the opposite leg 29 of the clock, which is in electrical contact with the binding-post 30, from which a conductor 31 extends to the plate 5.

34 represents an incandescent-lamp socket in series with the lamp-circuit conductors 1 and 2 between the main-line switch 11 and the clock-switch 19.

35 represents the pivoted armature of the magnet 23, and its forward or free edge carries a keeper or pawl 36, which is adapted to engage the beveled edge of the switch-bar 11 and retain the main-line switch in a closed position when the clock-circuit is open.

The operation of' the device is as follows: Both switches are closed, as shown in Fig. 1. The main-line current now passes through the main-line switch 11 to the lamp-circuit, which consists of the conductors 1 and 2, while the clock-circuit, which consists ofthe conductors 20 and 31, is open at the clock-wheel 26 and contact-sprin g 27. The break-wheel 26 is now set after the manner of an ordinary alarmclock, so that its contact-bar 38 (which is electrically connected with the clock-leg 25') IOO willat the appointed time comein Contact withthe spring` 27, thereby closinglhe clockcircuit through the magnet 23, energize the armature 35, which releases the bar l1 and allows the springs 32 33to force the free ends of the switch-blades l0 and l2 out of Contact withthe posts 4 and 6, thus opening the lampcircuil', and consequently extinguishing all lights in thelcircuit. Vhen it is desirable; to cut out the clock, the switch 19 is opened and the lamp-circuit l 2 is energized as long'ras the main-line switch 1l is closed. L

Having thus fully described my invention, whatI claim,V and desire -to'secure by Letters Patent, is-n 1. The combination with the clock-circuit, the break-wheel 26 and the contaotspring27 and the electromagnet 23, of the armature 35, the main-line circuit and the main-line switch 1l having its free end traveling in the pathof said armature, and the leaf-springs 32 33 operatively connected to said switch, substantially as shown and described.

2. In au automatic time cut-oit for incandescent-electric-lamp circuits, the main-line circuit, the lamp-circuit, and the springac tuated switch 1l arranged intermediate said circuits, in combination with the clock, the clock-switch 19, and the magnet 23 formed in the clock-circuit, and in series with said mainline circuit, andY the pivoted armature 35 adapted to lock said spring-aetuated mainline switch in a closed position, substantially as and for Vthe purpose set forth? in testimony whereof I have hereunto set my: hand in presence of two subscribing witnesses.

JAS. 111. BorgRDMAN.

Vitnesses:

C. W. DANGER, C. M. PRICE. 

